Calculate the membrane potential of a neuron at standard temperature under each of the following conditions: a. The concentration of sodium, potassium and chloride is the same on both the inside and the outside of the membrane. b. The concentration of ions inside and outside the cell are as given below, but the relative permeability is the same for the three ions. c. The concentration of ions inside and outside the cell are as given below, but the relative permeability of K+ is 100 times greater than that of Na+ and Cl-.
(12 Points)
[??+]?=150??; [??+]?=15??; [?+]?=5??; [?+]?=100??; [??−]?=150??; [??−]?=13??;[Na+]o=150mM; [Na+]i=15mM; [K+]o=5mM; [K+]i=100mM; [Cl−]o=150mM; [Cl−]i=13mM;
In: Biology
Explain where proteins are synthesized and then trace different routes taken by various types of proteins from the site of initial manufacture to the ultimate destination in the cell.
In: Biology
Explain how a single point mutation in the DNA sequence can have a damaging effect on the final protein. Provide a detailed explanation and include reasoning in regard to the transcription and translation processes.
In: Biology
describe the process of protein synthesis. include the
sequences involved, molecules participating and why is this process
important. draw structures or molecules involved
In: Biology
Describe one of the following theories and discuss why
you agree or disagree with this theory. You can use one of the
other theories to support your position.
a. Theory of moral development (Kolhberg)
b. cognitive theory of development (Piaget)
c. Psychosocial stages of development (Erikson)
Please use nonplagarized material, have a reference list and in text citations (APA format)
In: Biology
What is the numbering scheme for naming fatty acids.
In: Biology
A promoter is ______.
| a. |
a sequence in DNA that brings RNA polymerase near the site for transcription |
|
| b. |
one or more eukaryotic proteins that bind to DNA near the start of a gene |
|
| c. |
a protein that associates with bacterial RNA polymerase to help it bind to DNA |
|
| d. |
a sequence in RNA that promotes the release of RNA polymerase from DNA |
Which of the following statements best describes the promoter of a protein-coding gene?
| a. |
A site where many different proteins will bind |
|
| b. |
A site in DNA that recruits the RNA Polymerase |
|
| c. |
Part of the RNA molecule itself |
|
| d. |
A site found on the RNA polymerase |
In: Biology
Explain the concept of Hebbian modification of synapses and why it is important both to brain development and memory formation.
In: Biology
Describe three ways to tell if a specific neurotransmitter is synthesized and stored in a particular neuron.
In: Biology
write about
What is genetic variation (diversity)
Then types of variation ( gene flow, mutation evolution eyc)
Then explain each type with examples
In: Biology
Consider the following allele frequencies for three SNPs
| SNP1 | SNP2 | SNP3 | |
| Africa | A:20%,T:80% | G:70%,T:30% | C:20%,A:80% |
| Asia | A:50%,T:50% | G:20%,T:80% | C:20%,A:80% |
| South America | A:60%,T:40% | G:80%,T:20% | C:70%,A:30% |
Write down all possible 27 genotypes for these three SNPs.
Can someone please help me? Showing all the steps. I don't know what to do. Thank you! This is all that is provided
In: Biology
Indicate whether each of the following statements (a-e) is TRUE or FALSE. If you think a statement is FALSE, explain why. (10 pts)
a. TRUE / FALSE Graft rejection is mediated by pre-existing host T cell effectors and antibodies specific for antigens on the grafted tissue.
b. TRUE / FALSE Allogeneic grafts between individuals with identical HLA genes will be accepted.
c. TRUE / FALSE Your parents are generally going to be your best source of tissues if you need a transplant.
d. TRUE / FALSE Graft rejection only occurs when alloantigens from the grafted tissue are picked-up by recipient APCs and presented to recipient T cells.
e. TRUE / FALSE In Graft Versus Host Disease (GVHD) innate cells from the grafted tissue recognize host alloantigens and begin attacking host tissues.
In: Biology
In: Biology
1. A pea plant with genotype TtggFFRr is test corssed.
A) What is the genotype of the test parent ?
B) What would be the probability of offspring with genotype ttggFfrr ?
In: Biology
In: Biology